BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Two-dimensional algebra and origami - James Griffin\, DPMMS
DTSTART:20101105T140000Z
DTEND:20101105T150000Z
UID:TALK27695@talks.cam.ac.uk
CONTACT:Chris Bowman
DESCRIPTION:Given a finite set of elements in a group or a ring\, an order
 ing of the elements must be chosen before they can be lined up and compose
 d.  I will discuss the kind of algebra where compositions are instead inde
 xed by an n-tuple of distinct points in the plane.  I will give examples\,
  some of which may be familiar (although you might not have guessed it).  
 My final example comes from a modern approach to the ancient art of origam
 i.
LOCATION:MR4
END:VEVENT
END:VCALENDAR